<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <!--导入bootstrap的css文件-->
    <link rel="stylesheet" href="bootstrap/bootstrap/css/bootstrap.css">
    <!--导入jquery脚本-->
    <script src="jQuery/js/jquery-3.5.1.js"></script>
    <!--导入bootstrap.js-->
    <script src="bootstrap/bootstrap/js/bootstrap.js"></script>
    <style>
        .main {
            padding: 0;
        }

        .video {
            height: 600px;
            background-color: darkorange;

        }

        .all-new-items {
            margin: 0;
            justify-content: space-around;
        }

        .new-item {
            height: 150px;
            background-color: darkseagreen;
            padding: 0;
            margin: 10px auto;
        }

        .view-all-news {
            text-align: center;
            background-color: dodgerblue;
            margin: 10px auto;
        }
    </style>
</head>

<body>
    <div class="container-fluid main">
        <div class="video col-12">
            <video src="video/1.mp4"></video>
        </div>
        <div class="news">
            <div class="news-title col-12 text-center">
                <h1>新闻公告</h1>
            </div>
            <div class="col-12 row all-new-items">
                <div class="col-md-3  new-item"></div>
                <div class="col-md-3  new-item"></div>
                <div class="col-md-3  new-item"></div>
            </div>
            <div class="view-all-news col-md-3 col-11">查看所有新闻</div>
        </div>
        <div class="col-12 bg-secondary">1</div>
        <div class="col-12 bg-success">2</div>
        <div class="col-12 bg-primary">3</div>
        <div class="col-12 bg-warning">4</div>
    </div>
</body>

</html>